Timestamp Mixin for auto-populated created_at, updated_at

[slavovthinks]

Hey, folks 👋
Here is a Timestamp Mixin I've created for Beanie Documents. I'm wondering should I create a PR for it to be included as part of the project itself 🤔

from typing import Optional
from datetime import datetime

from pydantic import BaseModel, Field
from beanie import Document, before_event, Insert, Update, SaveChanges, Replace


class TimestampMixin(BaseModel):
    created_at: datetime = Field(default_factory=datetime.utcnow)
    updated_at: Optional[datetime] = None

    @before_event(Insert)
    def set_created_at(self):
        self.created_at = datetime.utcnow()

    @before_event(Update, SaveChanges, Replace)
    def set_updated_at(self):
        self.updated_at = datetime.utcnow()
        
class ExampleDocument(TimestampMixin, Document):
    ...

[yousafsabir]

Thanks Radostin
much appreciated.
I think we need to import Field from pydantice

[slavovthinks]

Yeah, true. I use that in a file where Field is imported will add it to the example, thanks!

[Kinjalrk2k]

#535 (comment)
Any resolution for the above issue? ~^